Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* |
| 2 | * aes_icm.c |
| 3 | * |
| 4 | * AES Integer Counter Mode |
| 5 | * |
| 6 | * David A. McGrew |
| 7 | * Cisco Systems, Inc. |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * |
| 12 | * Copyright (c) 2001-2006, Cisco Systems, Inc. |
| 13 | * All rights reserved. |
| 14 | * |
| 15 | * Redistribution and use in source and binary forms, with or without |
| 16 | * modification, are permitted provided that the following conditions |
| 17 | * are met: |
| 18 | * |
| 19 | * Redistributions of source code must retain the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer. |
| 21 | * |
| 22 | * Redistributions in binary form must reproduce the above |
| 23 | * copyright notice, this list of conditions and the following |
| 24 | * disclaimer in the documentation and/or other materials provided |
| 25 | * with the distribution. |
| 26 | * |
| 27 | * Neither the name of the Cisco Systems, Inc. nor the names of its |
| 28 | * contributors may be used to endorse or promote products derived |
| 29 | * from this software without specific prior written permission. |
| 30 | * |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 34 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 35 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| 36 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 37 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 38 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 41 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 42 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 43 | * |
| 44 | */ |
| 45 | |
| 46 | |
| 47 | #define ALIGN_32 0 |
| 48 | |
| 49 | #include "aes_icm.h" |
| 50 | #include "alloc.h" |
| 51 | |
| 52 | |
| 53 | debug_module_t mod_aes_icm = { |
| 54 | 0, /* debugging is off by default */ |
| 55 | "aes icm" /* printable module name */ |
| 56 | }; |
| 57 | |
| 58 | /* |
| 59 | * integer counter mode works as follows: |
| 60 | * |
| 61 | * 16 bits |
| 62 | * <-----> |
| 63 | * +------+------+------+------+------+------+------+------+ |
| 64 | * | nonce | pakcet index | ctr |---+ |
| 65 | * +------+------+------+------+------+------+------+------+ | |
| 66 | * | |
| 67 | * +------+------+------+------+------+------+------+------+ v |
| 68 | * | salt |000000|->(+) |
| 69 | * +------+------+------+------+------+------+------+------+ | |
| 70 | * | |
| 71 | * +---------+ |
| 72 | * | encrypt | |
| 73 | * +---------+ |
| 74 | * | |
| 75 | * +------+------+------+------+------+------+------+------+ | |
| 76 | * | keystream block |<--+ |
| 77 | * +------+------+------+------+------+------+------+------+ |
| 78 | * |
| 79 | * All fields are big-endian |
| 80 | * |
| 81 | * ctr is the block counter, which increments from zero for |
| 82 | * each packet (16 bits wide) |
| 83 | * |
| 84 | * packet index is distinct for each packet (48 bits wide) |
| 85 | * |
| 86 | * nonce can be distinct across many uses of the same key, or |
| 87 | * can be a fixed value per key, or can be per-packet randomness |
| 88 | * (64 bits) |
| 89 | * |
| 90 | */ |
| 91 | |
| 92 | err_status_t |
| 93 | aes_icm_alloc_ismacryp(cipher_t **c, int key_len, int forIsmacryp) { |
| 94 | extern cipher_type_t aes_icm; |
| 95 | uint8_t *pointer; |
| 96 | int tmp; |
| 97 | |
| 98 | debug_print(mod_aes_icm, |
| 99 | "allocating cipher with key length %d", key_len); |
| 100 | |
| 101 | /* |
| 102 | * Ismacryp, for example, uses 16 byte key + 8 byte |
| 103 | * salt so this function is called with key_len = 24. |
| 104 | * The check for key_len = 30 does not apply. Our usage |
| 105 | * of aes functions with key_len = values other than 30 |
| 106 | * has not broken anything. Don't know what would be the |
| 107 | * effect of skipping this check for srtp in general. |
| 108 | */ |
| 109 | if (!forIsmacryp && key_len != 30) |
| 110 | return err_status_bad_param; |
| 111 | |
| 112 | /* allocate memory a cipher of type aes_icm */ |
| 113 | tmp = (sizeof(aes_icm_ctx_t) + sizeof(cipher_t)); |
| 114 | pointer = (uint8_t*)crypto_alloc(tmp); |
| 115 | if (pointer == NULL) |
| 116 | return err_status_alloc_fail; |
| 117 | |
| 118 | /* set pointers */ |
| 119 | *c = (cipher_t *)pointer; |
| 120 | (*c)->type = &aes_icm; |
| 121 | (*c)->state = pointer + sizeof(cipher_t); |
| 122 | |
| 123 | /* increment ref_count */ |
| 124 | aes_icm.ref_count++; |
| 125 | |
| 126 | /* set key size */ |
| 127 | (*c)->key_len = key_len; |
| 128 | |
| 129 | return err_status_ok; |
| 130 | } |
| 131 | |
| 132 | err_status_t aes_icm_alloc(cipher_t **c, int key_len, int forIsmacryp) { |
| 133 | return aes_icm_alloc_ismacryp(c, key_len, 0); |
| 134 | } |
| 135 | |
| 136 | err_status_t |
| 137 | aes_icm_dealloc(cipher_t *c) { |
| 138 | extern cipher_type_t aes_icm; |
| 139 | |
| 140 | /* zeroize entire state*/ |
| 141 | octet_string_set_to_zero((uint8_t *)c, |
| 142 | sizeof(aes_icm_ctx_t) + sizeof(cipher_t)); |
| 143 | |
| 144 | /* free memory */ |
| 145 | crypto_free(c); |
| 146 | |
| 147 | /* decrement ref_count */ |
| 148 | aes_icm.ref_count--; |
| 149 | |
| 150 | return err_status_ok; |
| 151 | } |
| 152 | |
| 153 | |
| 154 | /* |
| 155 | * aes_icm_context_init(...) initializes the aes_icm_context |
| 156 | * using the value in key[]. |
| 157 | * |
| 158 | * the key is the secret key |
| 159 | * |
| 160 | * the salt is unpredictable (but not necessarily secret) data which |
| 161 | * randomizes the starting point in the keystream |
| 162 | */ |
| 163 | |
| 164 | err_status_t |
| 165 | aes_icm_context_init(aes_icm_ctx_t *c, const uint8_t *key) { |
| 166 | v128_t tmp_key; |
| 167 | |
| 168 | /* set counter and initial values to 'offset' value */ |
| 169 | /* FIX!!! this assumes the salt is at key + 16, and thus that the */ |
| 170 | /* FIX!!! cipher key length is 16! Also note this copies past the |
| 171 | end of the 'key' array by 2 bytes! */ |
| 172 | v128_copy_octet_string(&c->counter, key + 16); |
| 173 | v128_copy_octet_string(&c->offset, key + 16); |
| 174 | |
| 175 | /* force last two octets of the offset to zero (for srtp compatibility) */ |
| 176 | c->offset.v8[14] = c->offset.v8[15] = 0; |
| 177 | c->counter.v8[14] = c->counter.v8[15] = 0; |
| 178 | |
| 179 | /* set tmp_key (for alignment) */ |
| 180 | v128_copy_octet_string(&tmp_key, key); |
| 181 | |
| 182 | debug_print(mod_aes_icm, |
| 183 | "key: %s", v128_hex_string(&tmp_key)); |
| 184 | debug_print(mod_aes_icm, |
| 185 | "offset: %s", v128_hex_string(&c->offset)); |
| 186 | |
| 187 | /* expand key */ |
| 188 | aes_expand_encryption_key(&tmp_key, c->expanded_key); |
| 189 | |
| 190 | /* indicate that the keystream_buffer is empty */ |
| 191 | c->bytes_in_buffer = 0; |
| 192 | |
| 193 | return err_status_ok; |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * aes_icm_set_octet(c, i) sets the counter of the context which it is |
| 198 | * passed so that the next octet of keystream that will be generated |
| 199 | * is the ith octet |
| 200 | */ |
| 201 | |
| 202 | err_status_t |
| 203 | aes_icm_set_octet(aes_icm_ctx_t *c, |
| 204 | uint64_t octet_num) { |
| 205 | |
| 206 | #ifdef NO_64BIT_MATH |
| 207 | int tail_num = low32(octet_num) & 0x0f; |
| 208 | /* 64-bit right-shift 4 */ |
| 209 | uint64_t block_num = make64(high32(octet_num) >> 4, |
| 210 | ((high32(octet_num) & 0x0f)<<(32-4)) | |
| 211 | (low32(octet_num) >> 4)); |
| 212 | #else |
| 213 | int tail_num = octet_num % 16; |
| 214 | uint64_t block_num = octet_num / 16; |
| 215 | #endif |
| 216 | |
| 217 | |
| 218 | /* set counter value */ |
| 219 | /* FIX - There's no way this is correct */ |
| 220 | c->counter.v64[0] = c->offset.v64[0]; |
| 221 | #ifdef NO_64BIT_MATH |
| 222 | c->counter.v64[0] = make64(high32(c->offset.v64[0]) ^ high32(block_num), |
| 223 | low32(c->offset.v64[0]) ^ low32(block_num)); |
| 224 | #else |
| 225 | c->counter.v64[0] = c->offset.v64[0] ^ block_num; |
| 226 | #endif |
| 227 | |
| 228 | debug_print(mod_aes_icm, |
| 229 | "set_octet: %s", v128_hex_string(&c->counter)); |
| 230 | |
| 231 | /* fill keystream buffer, if needed */ |
| 232 | if (tail_num) { |
| 233 | v128_copy(&c->keystream_buffer, &c->counter); |
| 234 | aes_encrypt(&c->keystream_buffer, c->expanded_key); |
| 235 | c->bytes_in_buffer = sizeof(v128_t); |
| 236 | |
| 237 | debug_print(mod_aes_icm, "counter: %s", |
| 238 | v128_hex_string(&c->counter)); |
| 239 | debug_print(mod_aes_icm, "ciphertext: %s", |
| 240 | v128_hex_string(&c->keystream_buffer)); |
| 241 | |
| 242 | /* indicate number of bytes in keystream_buffer */ |
| 243 | c->bytes_in_buffer = sizeof(v128_t) - tail_num; |
| 244 | |
| 245 | } else { |
| 246 | |
| 247 | /* indicate that keystream_buffer is empty */ |
| 248 | c->bytes_in_buffer = 0; |
| 249 | } |
| 250 | |
| 251 | return err_status_ok; |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with |
| 256 | * the offset |
| 257 | */ |
| 258 | |
| 259 | err_status_t |
| 260 | aes_icm_set_iv(aes_icm_ctx_t *c, void *iv) { |
| 261 | v128_t *nonce = (v128_t *) iv; |
| 262 | |
| 263 | debug_print(mod_aes_icm, |
| 264 | "setting iv: %s", v128_hex_string(nonce)); |
| 265 | |
| 266 | v128_xor(&c->counter, &c->offset, nonce); |
| 267 | |
| 268 | debug_print(mod_aes_icm, |
| 269 | "set_counter: %s", v128_hex_string(&c->counter)); |
| 270 | |
| 271 | /* indicate that the keystream_buffer is empty */ |
| 272 | c->bytes_in_buffer = 0; |
| 273 | |
| 274 | return err_status_ok; |
| 275 | } |
| 276 | |
| 277 | |
| 278 | |
| 279 | /* |
| 280 | * aes_icm_advance(...) refills the keystream_buffer and |
| 281 | * advances the block index of the sicm_context forward by one |
| 282 | * |
| 283 | * this is an internal, hopefully inlined function |
| 284 | */ |
| 285 | |
| 286 | inline void |
| 287 | aes_icm_advance_ismacryp(aes_icm_ctx_t *c, uint8_t forIsmacryp) { |
| 288 | /* fill buffer with new keystream */ |
| 289 | v128_copy(&c->keystream_buffer, &c->counter); |
| 290 | aes_encrypt(&c->keystream_buffer, c->expanded_key); |
| 291 | c->bytes_in_buffer = sizeof(v128_t); |
| 292 | |
| 293 | debug_print(mod_aes_icm, "counter: %s", |
| 294 | v128_hex_string(&c->counter)); |
| 295 | debug_print(mod_aes_icm, "ciphertext: %s", |
| 296 | v128_hex_string(&c->keystream_buffer)); |
| 297 | |
| 298 | /* clock counter forward */ |
| 299 | |
| 300 | if (forIsmacryp) { |
| 301 | uint32_t temp; |
| 302 | //alex's clock counter forward |
| 303 | temp = ntohl(c->counter.v32[3]); |
| 304 | c->counter.v32[3] = htonl(++temp); |
| 305 | } else { |
| 306 | if (!++(c->counter.v8[15])) |
| 307 | ++(c->counter.v8[14]); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | inline void aes_icm_advance(aes_icm_ctx_t *c) { |
| 312 | aes_icm_advance_ismacryp(c, 0); |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /*e |
| 317 | * icm_encrypt deals with the following cases: |
| 318 | * |
| 319 | * bytes_to_encr < bytes_in_buffer |
| 320 | * - add keystream into data |
| 321 | * |
| 322 | * bytes_to_encr > bytes_in_buffer |
| 323 | * - add keystream into data until keystream_buffer is depleted |
| 324 | * - loop over blocks, filling keystream_buffer and then |
| 325 | * adding keystream into data |
| 326 | * - fill buffer then add in remaining (< 16) bytes of keystream |
| 327 | */ |
| 328 | |
| 329 | err_status_t |
| 330 | aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c, |
| 331 | unsigned char *buf, unsigned int *enc_len, |
| 332 | int forIsmacryp) { |
| 333 | unsigned int bytes_to_encr = *enc_len; |
| 334 | unsigned int i; |
| 335 | uint32_t *b; |
| 336 | |
| 337 | /* check that there's enough segment left but not for ismacryp*/ |
| 338 | if (!forIsmacryp && (bytes_to_encr + htons(c->counter.v16[7])) > 0xffff) |
| 339 | return err_status_terminus; |
| 340 | |
| 341 | debug_print(mod_aes_icm, "block index: %d", |
| 342 | htons(c->counter.v16[7])); |
| 343 | if (bytes_to_encr <= (unsigned int)c->bytes_in_buffer) { |
| 344 | |
| 345 | /* deal with odd case of small bytes_to_encr */ |
| 346 | for (i = (sizeof(v128_t) - c->bytes_in_buffer); |
| 347 | i < (sizeof(v128_t) - c->bytes_in_buffer + bytes_to_encr); i++) |
| 348 | { |
| 349 | *buf++ ^= c->keystream_buffer.v8[i]; |
| 350 | } |
| 351 | |
| 352 | c->bytes_in_buffer -= bytes_to_encr; |
| 353 | |
| 354 | /* return now to avoid the main loop */ |
| 355 | return err_status_ok; |
| 356 | |
| 357 | } else { |
| 358 | |
| 359 | /* encrypt bytes until the remaining data is 16-byte aligned */ |
| 360 | for (i=(sizeof(v128_t) - c->bytes_in_buffer); i < sizeof(v128_t); i++) |
| 361 | *buf++ ^= c->keystream_buffer.v8[i]; |
| 362 | |
| 363 | bytes_to_encr -= c->bytes_in_buffer; |
| 364 | c->bytes_in_buffer = 0; |
| 365 | |
| 366 | } |
| 367 | |
| 368 | /* now loop over entire 16-byte blocks of keystream */ |
| 369 | for (i=0; i < (bytes_to_encr/sizeof(v128_t)); i++) { |
| 370 | |
| 371 | /* fill buffer with new keystream */ |
| 372 | aes_icm_advance_ismacryp(c, forIsmacryp); |
| 373 | |
| 374 | /* |
| 375 | * add keystream into the data buffer (this would be a lot faster |
| 376 | * if we could assume 32-bit alignment!) |
| 377 | */ |
| 378 | |
| 379 | #if ALIGN_32 |
| 380 | b = (uint32_t *)buf; |
| 381 | *b++ ^= c->keystream_buffer.v32[0]; |
| 382 | *b++ ^= c->keystream_buffer.v32[1]; |
| 383 | *b++ ^= c->keystream_buffer.v32[2]; |
| 384 | *b++ ^= c->keystream_buffer.v32[3]; |
| 385 | buf = (uint8_t *)b; |
| 386 | #else |
| 387 | if ((((unsigned long) buf) & 0x03) != 0) { |
| 388 | *buf++ ^= c->keystream_buffer.v8[0]; |
| 389 | *buf++ ^= c->keystream_buffer.v8[1]; |
| 390 | *buf++ ^= c->keystream_buffer.v8[2]; |
| 391 | *buf++ ^= c->keystream_buffer.v8[3]; |
| 392 | *buf++ ^= c->keystream_buffer.v8[4]; |
| 393 | *buf++ ^= c->keystream_buffer.v8[5]; |
| 394 | *buf++ ^= c->keystream_buffer.v8[6]; |
| 395 | *buf++ ^= c->keystream_buffer.v8[7]; |
| 396 | *buf++ ^= c->keystream_buffer.v8[8]; |
| 397 | *buf++ ^= c->keystream_buffer.v8[9]; |
| 398 | *buf++ ^= c->keystream_buffer.v8[10]; |
| 399 | *buf++ ^= c->keystream_buffer.v8[11]; |
| 400 | *buf++ ^= c->keystream_buffer.v8[12]; |
| 401 | *buf++ ^= c->keystream_buffer.v8[13]; |
| 402 | *buf++ ^= c->keystream_buffer.v8[14]; |
| 403 | *buf++ ^= c->keystream_buffer.v8[15]; |
| 404 | } else { |
| 405 | b = (uint32_t *)buf; |
| 406 | *b++ ^= c->keystream_buffer.v32[0]; |
| 407 | *b++ ^= c->keystream_buffer.v32[1]; |
| 408 | *b++ ^= c->keystream_buffer.v32[2]; |
| 409 | *b++ ^= c->keystream_buffer.v32[3]; |
| 410 | buf = (uint8_t *)b; |
| 411 | } |
| 412 | #endif /* #if ALIGN_32 */ |
| 413 | |
| 414 | } |
| 415 | |
| 416 | /* if there is a tail end of the data, process it */ |
| 417 | if ((bytes_to_encr & 0xf) != 0) { |
| 418 | |
| 419 | /* fill buffer with new keystream */ |
| 420 | aes_icm_advance_ismacryp(c, forIsmacryp); |
| 421 | |
| 422 | for (i=0; i < (bytes_to_encr & 0xf); i++) |
| 423 | *buf++ ^= c->keystream_buffer.v8[i]; |
| 424 | |
| 425 | /* reset the keystream buffer size to right value */ |
| 426 | c->bytes_in_buffer = sizeof(v128_t) - i; |
| 427 | } else { |
| 428 | |
| 429 | /* no tail, so just reset the keystream buffer size to zero */ |
| 430 | c->bytes_in_buffer = 0; |
| 431 | |
| 432 | } |
| 433 | |
| 434 | return err_status_ok; |
| 435 | } |
| 436 | |
| 437 | err_status_t |
| 438 | aes_icm_encrypt(aes_icm_ctx_t *c, unsigned char *buf, unsigned int *enc_len) { |
| 439 | return aes_icm_encrypt_ismacryp(c, buf, enc_len, 0); |
| 440 | } |
| 441 | |
| 442 | err_status_t |
| 443 | aes_icm_output(aes_icm_ctx_t *c, uint8_t *buffer, int num_octets_to_output) { |
| 444 | unsigned int len = num_octets_to_output; |
| 445 | |
| 446 | /* zeroize the buffer */ |
| 447 | octet_string_set_to_zero(buffer, num_octets_to_output); |
| 448 | |
| 449 | /* exor keystream into buffer */ |
| 450 | return aes_icm_encrypt(c, buffer, &len); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | char |
| 455 | aes_icm_description[] = "aes integer counter mode"; |
| 456 | |
| 457 | uint8_t aes_icm_test_case_0_key[30] = { |
| 458 | 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, |
| 459 | 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, |
| 460 | 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
| 461 | 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd |
| 462 | }; |
| 463 | |
| 464 | uint8_t aes_icm_test_case_0_nonce[16] = { |
| 465 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 466 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 467 | }; |
| 468 | |
| 469 | uint8_t aes_icm_test_case_0_plaintext[32] = { |
| 470 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 471 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 472 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 473 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 474 | }; |
| 475 | |
| 476 | uint8_t aes_icm_test_case_0_ciphertext[32] = { |
| 477 | 0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80, |
| 478 | 0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4, |
| 479 | 0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7, |
| 480 | 0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab |
| 481 | }; |
| 482 | |
| 483 | cipher_test_case_t aes_icm_test_case_0 = { |
| 484 | 30, /* octets in key */ |
| 485 | aes_icm_test_case_0_key, /* key */ |
| 486 | aes_icm_test_case_0_nonce, /* packet index */ |
| 487 | 32, /* octets in plaintext */ |
| 488 | aes_icm_test_case_0_plaintext, /* plaintext */ |
| 489 | 32, /* octets in ciphertext */ |
| 490 | aes_icm_test_case_0_ciphertext, /* ciphertext */ |
| 491 | NULL /* pointer to next testcase */ |
| 492 | }; |
| 493 | |
| 494 | |
| 495 | /* |
| 496 | * note: the encrypt function is identical to the decrypt function |
| 497 | */ |
| 498 | |
| 499 | cipher_type_t aes_icm = { |
| 500 | (cipher_alloc_func_t) aes_icm_alloc, |
| 501 | (cipher_dealloc_func_t) aes_icm_dealloc, |
| 502 | (cipher_init_func_t) aes_icm_context_init, |
| 503 | (cipher_encrypt_func_t) aes_icm_encrypt, |
| 504 | (cipher_decrypt_func_t) aes_icm_encrypt, |
| 505 | (cipher_set_iv_func_t) aes_icm_set_iv, |
| 506 | (char *) aes_icm_description, |
| 507 | (int) 0, /* instance count */ |
| 508 | (cipher_test_case_t *) &aes_icm_test_case_0, |
| 509 | (debug_module_t *) &mod_aes_icm |
| 510 | }; |
| 511 | |